652 ON THE ANATOMY OF PHCENICOPTERUS. [DeC. 18, 



place Pkcenicopterus in the same sort of relation to the typical 

 Pelargomorphs, thus : — 



Typical Chenomorphce. 



Dysporomorphce, 



Palamedeida. 



PJicenicopterus. 



Pelargomorphce. 



a relationship which is exactly expressed by the term Amphimorphae 

 of Professor Huxley. 



EXPLANATION OF PLATES LIX. AND LX. 



Plate LIX. 



Fig. 1. Shoulder-musples of Ciconia maguari; outer view. 



2. Thigh of Phanicoptcrus ; outer side. 



3. Thigh of Leptopfilus argala ; outer side. 



4. Oalf-muscles of Phxnicopterus. 



Plate LX. 



Fig. 5. Calf muscles of Leptoptilus. 



6. Arm-muscles of Leptoptilus, showing arrangement of tensores 



patagii. 



7. Dissection of pectoralis major of Phoenieopterus. 



8. Tensor patagii of Duck. 



Complete list of reference-letters: — 

 An. Anconeous longus. 

 a.s.t. Accessory semitendinosus. 

 Bi. Biceps. 



bi'. Efeflected tendon of biceps-sling. 

 c.h.j, c.b..-^ Coracobrachialis. 

 D.I., B.E. Internal and external deltoids. 

 Fl.perf. Flexor perforatus. 

 Fl. prof. Flexor profundus. 

 Fl.p.p. Flexor perforatus et perforans. 

 g, g^. Gastrocnemius. 



l.d. Latissimus dorsi ; Idj, Id,^, its anterior and posterior divisions. 

 P.M.^, P-M.^ Divisions of great pectoral. 

 P. II. Second pectoral. 

 s.t. Semitendinosus. 

 s.m. Semimembranosus. 

 t.p.L, t.p.b. Tensores patagii. 

 t.f. Tensor fascise. 



